Drilled gum rubber stopper. Used to provide a positive seal on carboys. The #10 Drilled Stopper works well with Better Bottles and Bubbler PET fermentors.
Top Diameter: 1.969"
Bottom Diameter: 1.654"
Customer ReviewsWrite a review
Originally confused trying to find a topper for the 3 gallon better bottle. This works.
I have never had such a beautiful #10 drilled stopper in my life, not to mention as many requests about it
Thanks Midwest - y'all are great.
It fits snugly, and holds the airlock tight._x000D_It's easy to use, and easy to clean.
Perfect fit for a 6 gallon better bottle. Essential for a air tight seal.